Spot Forecast
Issued by NWS Des Moines, IA

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Spot Forecast for Happel...RES p/Iowa NRCS
National Weather Service Des Moines IA
1204 PM CDT Mon May 13 2024

Forecast is based on ignition time of 1400 CDT on May 13.
If conditions become unrepresentative...contact the National Weather
Service.

An initial observation at ignition and a mid burn observation are required.

Please relay them to the National Weather Service for each prescribed burn.

.DISCUSSION...

Partly cloudy skies into this afternoon. A few stray sprinkles
are possible, however rain is expected to remain south of the
area. Temperatures this afternoon will top out in the low 70s with
relative humidity around 30-35 percent. Wind will be out of the
north-northeast at around 10 mph.

.REST OF TODAY...

Sky/weather.........Partly sunny (65-75 percent). Haze late in the
                    afternoon.
Max temperature.....Around 73.
Min humidity........31 percent.
Wind (20 ft)........North winds 9 to 10 mph.
Mixing height.......6400 ft AGL.
Transport winds.....North 14 to 16 mph.
Smoke dispersal.....Excellent (71900 knot-ft).
GFDI................0.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (CDT)      2PM 3PM 4PM 5PM
Sky (%).........71  70  68  65
Weather cov.....    DEF DEF DEF
Weather type....    HAZ HAZ HAZ
Tstm cov........
Temp............71  71  72  71
RH..............35  34  31  32
20 FT wind dir..N   N   N   N
20 FT wind spd..9   9   10  10
20 FT wind gust.10  10  13  13
Mix hgt (kft)...6.0 6.4 6.4 6.2
Transp wind dir.N   N   N   N
Transp wind spd.14  15  15  16
GFDI............0   0   0   0
Haines index....4   4   4   4
SDspl kt-ft/100072  83  84  86

.TONIGHT...

Sky/weather.........Mostly cloudy (50-60 percent) then becoming
                    partly cloudy (35-45 percent).
Min temperature.....Around 45.
Max humidity........76 percent.
Wind (20 ft)........North winds 8 to 10 mph.
Mixing height.......400 ft AGL.
Transport winds.....Northeast 13 to 16 mph.
Smoke dispersal.....Excellent (82200 knot-ft) early in the evening
                    decreasing to poor (4900 knot-ft) late in the
                    night.
GFDI................0.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........60     46     32     30     30     30
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............70     64     57     54     51     48
RH..............35     45     57     64     71     71
20 ft wind......N 10   N 9    N 8    N 9    NE 9   NE 9
20 ft wind gust.13     16     15     17     17     16
Mix hgt (ft)....5900   600    500    500    500    500
Transport wind..N 16   N 14   NE 14  NE 15  NE 16  NE 13
GFDI............0      0      0      0      0      0
Haines index....4      4      4      4      4      4
SDspl kt-ft/100082     8      6      6      7      5

.TUESDAY...

Sky/weather.........Mostly sunny (25-35 percent).
Max temperature.....Around 71.
Min humidity........39 percent.
Wind (20 ft)........Northeast winds 9 to 12 mph.
Mixing height.......5100 ft AGL.
Transport winds.....East 9 to 16 mph.
Smoke dispersal.....Poor (7300 knot-ft) early in the morning
                    increasing to good (52600 knot-ft) in the
                    afternoon.
GFDI................0.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........30        30        30        30
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
Temp............47        55        63        69
RH..............76        64        52        42
20 FT wind......NE 9G16   E 10G16   E 12G16   E 10G15
Mix hgt (ft)....600       1700      3300      4700
Transport wind..NE 15     E 16      E 16      E 12
GFDI............0         0         0         0
Haines index....4         4         4         3
SDspl kt-ft/10007         23        45        49

$$
Forecaster...Hagenhoff
Requested by...Danny Simcox
Type of request...PRESCRIBED
.TAG 2413992.0/DMX
.DELDT 05/13/24
.FormatterVersion 2.0.0
.EMAIL dsimcox@res.us